A vertical injection molding machine lower mold opening mechanism

Abstract

This utility model discloses a lower mold opening mechanism for a vertical injection molding machine, including an injection molding mechanism and a lower mold mechanism. The lower mold mechanism is movably connected to the injection molding mechanism. The injection molding mechanism includes a worktable, with two support plates symmetrically fixedly mounted on the top of the worktable. A rotating shaft is rotatably connected between the two support plates, and two positioning plates are symmetrically fixedly connected to the rotating shaft. A material ejector plate is uniformly fixedly connected to the rotating shaft, and a bearing plate is fixedly connected to the middle of the rotating shaft. The lower mold mechanism includes a sliding base, with a fixed base fixedly mounted on the top of the sliding base. This utility model significantly improves the automation efficiency and product integrity of the vertical injection molding machine through the design of the linked demolding and material ejection mechanism. The servo motor drives the rotating shaft to move the material ejector plate and the positioning plate in coordination, accurately picking up the injection molded part to the bearing plate and sliding it into the receiving tray, thus improving the material ejection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, specifically to a lower mold opening mechanism for a vertical injection molding machine. Background Technology

[0002] Injection molding machines are key equipment in the plastics processing industry. They are also known as injection molding machines and mainly consist of an injection system, a mold clamping system, a hydraulic transmission system, and an electrical control system. They can be divided into vertical injection molding machines, horizontal injection molding machines, angle injection molding machines, and multi-station molding machines. Traditional vertical injection molding machines rely on a single ejector pin or manual removal for demolding, which results in low efficiency, a high risk of safety accidents, and increased cycle time. Therefore, there is an urgent need for a mold opening mechanism for vertical injection molding machines to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a lower mold opening mechanism for a vertical injection molding machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lower mold opening mechanism for a vertical injection molding machine, comprising an injection molding mechanism and a lower mold mechanism, wherein the lower mold mechanism is movably connected to the injection molding mechanism, the injection molding mechanism comprising a worktable, two support plates symmetrically fixedly mounted on the top of the worktable, a rotating shaft rotatably connected between the two support plates, two positioning plates symmetrically fixedly mounted on the rotating shaft, a material feeding pusher uniformly fixedly mounted on the rotating shaft, a bearing plate fixedly connected in the middle of the rotating shaft, the lower mold mechanism comprising a sliding base, a fixed base fixedly mounted on the top of the sliding base, two second hydraulic telescopic rods symmetrically fixedly mounted on the inner side of the fixed base, a support cross plate fixedly mounted on the top of the two second hydraulic telescopic rods, and a material feeding pusher uniformly fixedly mounted on the top of the support cross plate.

[0005] Preferably, four support slide rods are evenly fixedly installed at one end of the top of the workbench, a top plate is fixedly installed at the top of the support slide rods, an injection molding device is fixedly installed on the top plate, and an upper mold is movably connected to the support slide rods.

[0006] Preferably, a double-bar slide rail is fixedly installed at the top center of the workbench, and a first hydraulic telescopic rod is fixedly installed at the top end of the double-bar slide rail away from the supporting slide rod. A servo motor is fixedly installed at the outer top of one of the supporting plates, and the drive end of the servo motor is fixedly installed at one end of the rotating shaft.

[0007] Preferably, three feeding push plates are evenly provided, and all three feeding push plates are located between two positioning plates. The length of the positioning plate is greater than the length of the feeding push plate, and the end of the positioning plate away from the rotation axis is semi-circular.

[0008] Preferably, the bottom end of the sliding base has two symmetrically provided limiting grooves, and the sliding base is slidably connected to the top end of the double rod slide rail through the limiting grooves. The middle part of the end of the sliding base near the first hydraulic telescopic rod is fixedly installed at the telescopic end of the first hydraulic telescopic rod.

[0009] Preferably, a receiving tray is fixedly installed at one end of the fixed base near the first hydraulic telescopic rod.

[0010] Preferably, a lower mold is fixedly installed on the top of the fixed base, and mold grooves are evenly opened on the top of the lower mold. An insertion hole is opened through the top of the lower mold at the bottom end of the mold groove away from the receiving tray. The number of material feeding push rods is the same as the number of mold grooves, and the material feeding push rods are slidably connected to the inside of the insertion hole.

[0011] Preferably, the end of the positioning plate away from the rotating shaft is slidably connected to the top of the lower mold.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention significantly improves the automation efficiency and product integrity of vertical injection molding machines through the linkage demolding and unloading mechanism design. The servo motor drives the rotating shaft to move the unloading push plate and the positioning plate in coordination, accurately picking up the injection molded part to the carrier plate and sliding it into the receiving tray, thus improving unloading efficiency. The second hydraulic telescopic rod controls the unloading push rod to lift and demold. The semi-circular end of the positioning plate slides into contact with the lower mold to apply positioning, preventing the unloading push plate from getting stuck in the mold groove and reducing the failure rate. The modular sliding base and double rod slide rail design simplify the maintenance process and meet the needs of high-speed continuous and safe production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the main body in the second state of this utility model;

[0016] Figure 3 This is a schematic diagram of the injection molding mechanism in this utility model;

[0017] Figure 4 This is a schematic diagram of the rotating shaft part in this utility model;

[0018] Figure 5 This is a schematic diagram of the disassembled structure of the lower mold mechanism in this utility model.

[0019] In the diagram: 1-Injection molding mechanism; 2-Lower mold mechanism; 3-Worktable; 4-Support slide bar; 5-Top plate; 6-Double rod slide rail; 7-First hydraulic telescopic rod; 8-Support plate; 9-Rotating shaft; 10-Servo motor; 11-Positioning plate; 12-Unloading push plate; 13-Bearing plate; 14-Sliding base; 15-Limiting slide groove; 16-Fixed base; 17-Receiving tray; 18-Second hydraulic telescopic rod; 19-Supporting horizontal plate; 20-Unloading push rod; 21-Lower mold; 22-Mold groove; 23-Insertion hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides an embodiment of a vertical injection molding machine lower mold opening mechanism, including an injection molding mechanism 1 and a lower mold mechanism 2. The lower mold mechanism 2 is movably connected to the injection molding mechanism 1. The injection molding mechanism 1 includes a worktable 3. Two support plates 8 are symmetrically fixedly installed at the top of the worktable 3. A rotating shaft 9 is rotatably connected between the two support plates 8. Two positioning plates 11 are symmetrically fixedly connected to the rotating shaft 9. A material feeding push plate 12 is uniformly fixedly connected to the rotating shaft 9. A bearing plate 13 is fixedly connected to the middle of the rotating shaft 9. Four support slide rods 4 are uniformly fixedly installed at one end of the top of the worktable 3. A top plate 5 is fixedly installed at the top of the support slide rods 4. An injection molding device is fixedly installed on the top plate 5. An upper mold is movably connected to the support slide rods 4. The upper mold moves up and down by a telescopic rod.

[0022] A double-rod slide rail 6 is fixedly installed at the top center of the workbench 3. A first hydraulic telescopic rod 7 is fixedly installed at the top end of the double-rod slide rail 6 away from the supporting slide rod 4. A servo motor 10 is fixedly installed at the top outer side of one of the support plates 8. The drive end of the servo motor 10 is fixedly installed at one end of the rotating shaft 9. Three material feeding push plates 12 are evenly arranged, and the three material feeding push plates 12 are all located between two positioning plates 11. The drive end of the servo motor 10 drives the rotating shaft 9 to rotate, thereby driving the positioning plate 11, the material feeding push plate 12 and the bearing plate 13 to rotate. The material feeding push plate 12 is used to scrape out the injection molded part, and the bearing plate 13 is used to support the scraped injection molded part to prevent it from falling.

[0023] The lower mold mechanism 2 includes a sliding base 14, a fixed base 16 is fixedly installed on the top of the sliding base 14, two second hydraulic telescopic rods 18 are symmetrically fixedly installed on the inner side of the fixed base 16, a support plate 19 is fixedly installed on the top of the two second hydraulic telescopic rods 18, and a material feeding push rod 20 is evenly fixedly connected to the top of the support plate 19. Two limiting grooves 15 are symmetrically opened at the bottom of the sliding base 14. The sliding base 14 is slidably connected to the top of the double rod slide rail 6 through the limiting grooves 15. The middle part of the sliding base 14 near the first hydraulic telescopic rod 7 is fixedly installed at the telescopic end of the first hydraulic telescopic rod 7. A receiving tray 17 is fixedly installed on the fixed base 16 near the first hydraulic telescopic rod 7. The receiving tray 17 is used to receive the demolded injection molded parts.

[0024] A lower mold 21 is fixedly installed on the top of the fixed base 16. Mold grooves 22 are evenly opened on the top of the lower mold 21. An insertion hole 23 is opened through the end of the lower mold 21 located at the bottom of the mold groove 22 away from the receiving tray 17. The number of material ejector rods 20 and mold grooves 22 are the same, and the material ejector rods 20 are slidably connected to the inside of the insertion hole 23. The second hydraulic telescopic rod 18 extends and pushes the support plate 19 at the top to move upward. The movement of the support plate 19 pushes the material ejector rods 20 at the top to move upward, thereby pushing out the injection molded part inside the mold groove 22.

[0025] The length of the positioning plate 11 is greater than the length of the unloading push plate 12, and the end of the positioning plate 11 away from the rotating shaft 9 is designed to be semi-circular. The end of the positioning plate 11 away from the rotating shaft 9 is slidably connected to the top of the lower mold 21. When the end of the positioning plate 11 rotates to the top of the lower mold 21, the end of the unloading push plate 12 is higher than the top of the lower mold 21, thereby preventing the end of the unloading push plate 12 from getting stuck inside the mold groove 22.

[0026] Working principle: During use, when injection molding is complete, the upper mold moves upward and disengages from the top of the lower mold 21. Then, the first hydraulic telescopic rod 7 retracts. The telescopic end of the first hydraulic telescopic rod 7 drives the sliding base 14 to move away from the supporting slide rod 4. The movement of the sliding base 14 drives the lower mold 21 to move through the fixed base 16 until the mold groove 22 is completely moved to the side of the unloading push plate 12 close to the first hydraulic telescopic rod 7. Then, the second hydraulic telescopic rod 18 extends. The telescopic end of the second hydraulic telescopic rod 18 pushes the supporting horizontal plate 19 upward. The movement of 19 causes the three top ejector pins 20 to move upward synchronously until the top of the ejector pins 20 are level with the top of the lower mold 21. The movement of the ejector pins 20 pushes the end of the injection molded part located inside the mold groove 22 upward away from the mold groove 22. At this time, the end of the injection molded part near the insertion hole 23 tilts upward. Then, the servo motor 10 is controlled to rotate. The drive end of the servo motor 10 drives the rotating shaft 9 to rotate. The rotation of the rotating shaft 9 drives the positioning plate 11, the ejector pin 12 and the bearing plate 13 to rotate until the positioning plate 11 moves away from the rotating shaft 9. One end is tightly attached to the top of the lower mold 21. Since the length of the ejector plate 12 is shorter than the length of the positioning plate 11, the end of the positioning plate 11 does not contact the top of the lower mold 21. Then, the first hydraulic telescopic rod 7 is activated to extend. The telescopic end of the first hydraulic telescopic rod 7 pushes the sliding base 14 to move closer to the support slide rod 4, thereby driving the lower mold 21 to move. When the injection molded part inside the mold groove 22 moves to the end of the ejector plate 12, the injection molded part is scraped out by the ejector plate 12 and moves towards the top of the support plate 13. The lower mold 21 moves to the end of the ejector plate 12 and disengages. The lower mold 21 moves from the top to the top of the receiving tray 17. At this time, the injection molded part located at the top of the support plate 13 slides down to the top of the receiving tray 17. Then, the second hydraulic telescopic rod 18 is controlled to retract, driving the unloading push rod 20 to descend to the initial position. When the lower mold 21 is pushed to the bottom of the upper mold by the first hydraulic telescopic rod 7, the injection molded part is completely located inside the top of the receiving tray 17. At this time, the operator can take out the injection molded part and carry out the next round of injection molding. Then, the servo motor 10 is controlled to rotate in the opposite direction, driving the positioning plate 11 to rotate and return to the initial position.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lower mold opening mechanism for a vertical injection molding machine, comprising an injection molding mechanism (1) and a lower mold mechanism (2), characterized in that: The lower mold mechanism (2) is movably connected to the injection molding mechanism (1). The injection molding mechanism (1) includes a worktable (3). Two support plates (8) are symmetrically fixedly installed on the top of the worktable (3). A rotating shaft (9) is rotatably connected between the two support plates (8). Two positioning plates (11) are symmetrically fixedly connected on the rotating shaft (9). A material feeding push plate (12) is uniformly fixedly connected on the rotating shaft (9). A bearing plate (13) is fixedly connected in the middle of the rotating shaft (9). The lower mold mechanism (2) includes a sliding base (14). A fixed base (16) is fixedly installed on the top of the sliding base (14). Two second hydraulic telescopic rods (18) are symmetrically fixedly installed on the inner side of the fixed base (16). A support horizontal plate (19) is fixedly installed on the top of the two second hydraulic telescopic rods (18). A material feeding push rod (20) is uniformly fixedly connected to the top of the support horizontal plate (19).

2. The lower mold opening mechanism of a vertical injection molding machine according to claim 1, characterized in that: Four support slide rods (4) are evenly fixedly installed at one end of the top of the workbench (3). A top plate (5) is fixedly installed at the top of the support slide rods (4). An injection molding equipment is fixedly installed on the top plate (5). An upper mold is movably connected to the support slide rods (4).

3. The lower mold opening mechanism of a vertical injection molding machine according to claim 2, characterized in that: A double-rod slide rail (6) is fixedly installed at the top center of the workbench (3). A first hydraulic telescopic rod (7) is fixedly installed at the top end of the double-rod slide rail (6) away from the support slide rod (4). A servo motor (10) is fixedly installed at the top outer side of one of the support plates (8). The drive end of the servo motor (10) is fixedly installed at one end of the rotating shaft (9).

4. The lower mold opening mechanism of a vertical injection molding machine according to claim 1, characterized in that: The feeding pusher plate (12) is evenly provided in three parts, and the three feeding pusher plates (12) are all located between the two positioning plates (11). The length of the positioning plate (11) is greater than the length of the feeding pusher plate (12), and the end of the positioning plate (11) away from the rotating shaft (9) is designed in a semi-circular shape.

5. The lower mold opening mechanism of a vertical injection molding machine according to claim 3, characterized in that: The bottom end of the sliding base (14) has two symmetrically opened limiting grooves (15). The sliding base (14) is slidably connected to the top of the double rod slide rail (6) through the limiting grooves (15). The middle part of the sliding base (14) near the first hydraulic telescopic rod (7) is fixedly installed at the telescopic end of the first hydraulic telescopic rod (7).

6. The lower mold opening mechanism of a vertical injection molding machine according to claim 3, characterized in that: A receiving tray (17) is fixedly installed at one end of the fixed base (16) near the first hydraulic telescopic rod (7).

7. The lower mold opening mechanism of a vertical injection molding machine according to claim 6, characterized in that: The top of the fixed base (16) is fixedly installed with a lower mold (21). The top of the lower mold (21) is evenly provided with mold grooves (22). The top of the lower mold (21) is located at the bottom of the mold groove (22) away from the receiving tray (17) and has a through insertion hole (23). The number of the feeding push rods (20) and the mold grooves (22) are the same, and the feeding push rods (20) are slidably connected to the inside of the insertion hole (23).

8. The lower mold opening mechanism of a vertical injection molding machine according to claim 7, characterized in that: The end of the positioning plate (11) away from the rotating shaft (9) is slidably connected to the top of the lower mold (21).

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